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Precision Shoulder Screw - Slotted

Shoulder screws, sometimes referred to as shoulder bolts or stripper bolts, get their name from the unique cylindrical shoulder found between the head and the threads of the screw. At Lyn-Tron, we manufacture precision shoulder screws, which are so named for the high tolerance (+/-0.0005) the shoulder diameter is held to.

Precision slotted head shoulder screws are typically offered in the following materials. However, Lyn-tron can also manufacture precision shoulder screws using other materials upon request.

All common thread sizes are stocked in both Inch (4-40, 6-32, 8-32, 10-32 etc.) and Metric (M3, M3.5, M4 etc.). Precision shoulder screw sizes come standard from 1/8" up to 1/2" diameters and in Metric sizes from 3mm to 10mm diameters.

Feel free to contact us today to modify any of our shoulder screw dimensions, or to create a custom fastener to fit your specific application!

What Makes Precision Slotted Shoulder Screws Different?

There are a few key differences between precision slotted head shoulder screws, socket head shoulder screws, and other types of screws

The primary difference between shoulder screws and other standard screws is the unthreaded cylindrical shoulder that separates the head of the screw from the thread. When threaded into an application, the shoulder will stay extended from the top of the surface. This provides a shoulder screw with the unique ability to serve as a guide for moving parts, pivot points, or a shaft for an item that may need to rotate in an assembly.

The next most obvious characteristic of slotted shoulder screws compared to socketed shoulder screws is the fact that the head of the screw features a slotted drive. This allows for a standard flathead screwdriver to drive the screw into place, where a socketed shoulder screw requires a hex key.

Finally, precision shoulder screws are also different from other standard shoulder screws because of the high tolerance (+/-0.0005) the shoulder diameter and length are held to. This allows for a tight, but free fit with nominal-sized components which makes them perfect for use in electronic hardware applications.

Selection Guide

Still not sure which precision shoulder screw is the best for your application? Take the time to review our precision shoulder screw selection guide to find out how to select the right fastener for your unique needs.

More Questions?

Lyn-Tron has been the leading manufacturer of electronic components since 1956! We manufacture a full line of standard electronic hardware, and also have the ability to create custom parts and OEM designed hardware to your print.

We welcome you to Contact us today if you have any questions about selecting the right precision slotted head shoulder screws for your project, or if you have any requests for custom electronic hardware or parts manufacturing.

1/8" Precision Shoulder Screw - Slotted

Steel

Part Number Material Head Diameter Head Length Shoulder Diameter Shoulder Length Male Thread Thread Length Details
ST7501 Steel 1/4" 1/8" 1/8" 1/8" #4-40 5/32"
  • Material: Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Shoulder Diameter: 1/8"
  • Shoulder Length: 1/8"
  • Male Thread: #4-40
  • Thread Length: 5/32"
ST7502 Steel 1/4" 1/8" 1/8" 3/16" #4-40 5/32"
  • Material: Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Shoulder Diameter: 1/8"
  • Shoulder Length: 3/16"
  • Male Thread: #4-40
  • Thread Length: 5/32"
ST7503 Steel 1/4" 1/8" 1/8" 1/4" #4-40 5/32"
  • Material: Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Shoulder Diameter: 1/8"
  • Shoulder Length: 1/4"
  • Male Thread: #4-40
  • Thread Length: 5/32"
ST7504 Steel 1/4" 1/8" 1/8" 5/16" #4-40 5/32"
  • Material: Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Shoulder Diameter: 1/8"
  • Shoulder Length: 5/16"
  • Male Thread: #4-40
  • Thread Length: 5/32"
ST7505 Steel 1/4" 1/8" 1/8" 3/8" #4-40 5/32"
  • Material: Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Shoulder Diameter: 1/8"
  • Shoulder Length: 3/8"
  • Male Thread: #4-40
  • Thread Length: 5/32"
ST7506 Steel 1/4" 1/8" 1/8" 7/16" #4-40 5/32"
  • Material: Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Shoulder Diameter: 1/8"
  • Shoulder Length: 7/16"
  • Male Thread: #4-40
  • Thread Length: 5/32"
ST7507 Steel 1/4" 1/8" 1/8" 1/2" #4-40 5/32"
  • Material: Steel
  • Head Diameter: 1/4"
  • Head Length: 1/8"
  • Shoulder Diameter: 1/8"
  • Shoulder Length: 1/2"
  • Male Thread: #4-40
  • Thread Length: 5/32"

5/32" Precision Shoulder Screw - Slotted

Steel

Part Number Material Head Diameter Head Length Shoulder Diameter Shoulder Length Male Thread Thread Length Details
ST7508 Steel 9/32" 1/8" 5/32" 1/8" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 1/8"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7509 Steel 9/32" 1/8" 5/32" 3/16" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 3/16"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7510 Steel 9/32" 1/8" 5/32" 1/4" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 1/4"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7511 Steel 9/32" 1/8" 5/32" 5/16" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 5/16"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7512 Steel 9/32" 1/8" 5/32" 3/8" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 3/8"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7513 Steel 9/32" 1/8" 5/32" 7/16" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 7/16"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7514 Steel 9/32" 1/8" 5/32" 1/2" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 1/2"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7515 Steel 9/32" 1/8" 5/32" 9/16" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 9/16"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7516 Steel 9/32" 1/8" 5/32" 5/8" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 5/8"
  • Male Thread: #6-32
  • Thread Length: 3/16"
ST7517 Steel 9/32" 1/8" 5/32" 11/16" #6-32 3/16"
  • Material: Steel
  • Head Diameter: 9/32"
  • Head Length: 1/8"
  • Shoulder Diameter: 5/32"
  • Shoulder Length: 11/16"
  • Male Thread: #6-32
  • Thread Length: 3/16"

3/16" Precision Shoulder Screw - Slotted

Steel

Part Number Material Head Diameter Head Length Shoulder Diameter Shoulder Length Male Thread Thread Length Details
ST7519 Steel 5/16" 5/32" 3/16" 1/8" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 1/8"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7520 Steel 5/16" 5/32" 3/16" 3/16" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 3/16"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7521 Steel 5/16" 5/32" 3/16" 1/4" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 1/4"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7522 Steel 5/16" 5/32" 3/16" 5/16" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 5/16"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7523 Steel 5/16" 5/32" 3/16" 3/8" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 3/8"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7524 Steel 5/16" 5/32" 3/16" 7/16" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 7/16"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7525 Steel 5/16" 5/32" 3/16" 1/2" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 1/2"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7526 Steel 5/16" 5/32" 3/16" 9/16" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 9/16"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7527 Steel 5/16" 5/32" 3/16" 5/8" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 5/8"
  • Male Thread: #8-32
  • Thread Length: 3/16"
ST7528 Steel 5/16" 5/32" 3/16" 11/16" #8-32 3/16"
  • Material: Steel
  • Head Diameter: 5/16"
  • Head Length: 5/32"
  • Shoulder Diameter: 3/16"
  • Shoulder Length: 11/16"
  • Male Thread: #8-32
  • Thread Length: 3/16"

1/4" Precision Shoulder Screw - Slotted

Steel

Part Number Material Head Diameter Head Length Shoulder Diameter Shoulder Length Male Thread Thread Length Details
ST7535 Steel 3/8" 3/16" 1/4" 1/8" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 1/8"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7536 Steel 3/8" 3/16" 1/4" 3/16" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 3/16"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7537 Steel 3/8" 3/16" 1/4" 1/4" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 1/4"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7538 Steel 3/8" 3/16" 1/4" 5/16" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 5/16"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7539 Steel 3/8" 3/16" 1/4" 3/8" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 3/8"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7540 Steel 3/8" 3/16" 1/4" 7/16" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 7/16"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7541 Steel 3/8" 3/16" 1/4" 1/2" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 1/2"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7542 Steel 3/8" 3/16" 1/4" 9/16" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 9/16"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7543 Steel 3/8" 3/16" 1/4" 5/8" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 5/8"
  • Male Thread: #10-32
  • Thread Length: 1/4"
ST7544 Steel 3/8" 3/16" 1/4" 11/16" #10-32 1/4"
  • Material: Steel
  • Head Diameter: 3/8"
  • Head Length: 3/16"
  • Shoulder Diameter: 1/4"
  • Shoulder Length: 11/16"
  • Male Thread: #10-32
  • Thread Length: 1/4"

5/16" Precision Shoulder Screw - Slotted

Steel

Part Number Material Head Diameter Head Length Shoulder Diameter Shoulder Length Male Thread Thread Length Details
ST7551 Steel 7/16" 7/32" 5/16" 1/4" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 1/4"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7552 Steel 7/16" 7/32" 5/16" 5/16" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 5/16"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7553 Steel 7/16" 7/32" 5/16" 3/8" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 3/8"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7554 Steel 7/16" 7/32" 5/16" 1/2" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 1/2"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7555 Steel 7/16" 7/32" 5/16" 5/8" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 5/8"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7556 Steel 7/16" 7/32" 5/16" 3/4" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 3/4"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7557 Steel 7/16" 7/32" 5/16" 7/8" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 7/8"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7558 Steel 7/16" 7/32" 5/16" 1" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 7/16"
  • Head Length: 7/32"
  • Shoulder Diameter: 5/16"
  • Shoulder Length: 1"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"

3/8" Precision Shoulder Screw - Slotted

Steel

Part Number Material Head Diameter Head Length Shoulder Diameter Shoulder Length Male Thread Thread Length Details
ST7559 Steel 1/2" 7/32" 3/8" 1/4" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 1/4"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7560 Steel 1/2" 7/32" 3/8" 5/16" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 5/16"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7561 Steel 1/2" 7/32" 3/8" 3/8" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 3/8"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7562 Steel 1/2" 7/32" 3/8" 1/2" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 1/2"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7563 Steel 1/2" 7/32" 3/8" 5/8" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 5/8"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7564 Steel 1/2" 7/32" 3/8" 3/4" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 3/4"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7565 Steel 1/2" 7/32" 3/8" 7/8" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 7/8"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7566 Steel 1/2" 7/32" 3/8" 1" #1/4-20 3/8"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 1"
  • Male Thread: #1/4-20
  • Thread Length: 3/8"
ST7567 Steel 1/2" 7/32" 3/8" 1/4" #5/16-18 7/16"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 1/4"
  • Male Thread: #5/16-18
  • Thread Length: 7/16"
ST7568 Steel 1/2" 7/32" 3/8" 5/16" #5/16-18 7/16"
  • Material: Steel
  • Head Diameter: 1/2"
  • Head Length: 7/32"
  • Shoulder Diameter: 3/8"
  • Shoulder Length: 5/16"
  • Male Thread: #5/16-18
  • Thread Length: 7/16"

1/2" Precision Shoulder Screw - Slotted

Steel

Part Number Material Head Diameter Head Length Shoulder Diameter Shoulder Length Male Thread Thread Length Details
ST7575 Steel 5/8" 1/4" 1/2" 1/4" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 1/4"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"
ST7576 Steel 5/8" 1/4" 1/2" 5/16" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 5/16"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"
ST7577 Steel 5/8" 1/4" 1/2" 3/8" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 3/8"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"
ST7578 Steel 5/8" 1/4" 1/2" 1/2" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 1/2"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"
ST7579 Steel 5/8" 1/4" 1/2" 5/8" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 5/8"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"
ST7580 Steel 5/8" 1/4" 1/2" 3/4" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 3/4"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"
ST7581 Steel 5/8" 1/4" 1/2" 7/8" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 7/8"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"
ST7582 Steel 5/8" 1/4" 1/2" 1" #3/8-16 1/2"
  • Material: Steel
  • Head Diameter: 5/8"
  • Head Length: 1/4"
  • Shoulder Diameter: 1/2"
  • Shoulder Length: 1"
  • Male Thread: #3/8-16
  • Thread Length: 1/2"